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Astronomy, Astrophysics, Cosmology Forum

Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.

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Graduate Are Trojans possible for other planets besides Jupiter?

Apr 27, 2006 · Replies 9 · May 5, 2006

Replies: 9

Views: 5K

Graduate Finding Water on the Moon: A Proposal for an Experiment

May 2, 2006 · Replies 2 · May 4, 2006

Replies: 2

Views: 4K

High School What are Some Beginner-Friendly Books on Cosmology and General Relativity?

May 2, 2006 · Replies 15 · May 4, 2006

Replies: 15

Views: 5K

Undergrad How do they measure the CMB temperature?

May 3, 2006 · Replies 3 · May 4, 2006

Replies: 3

Views: 3K

Undergrad Is the existence of life just a series of improbable accidents?

Apr 27, 2006 · Replies 5 · May 4, 2006

Replies: 5

Views: 5K

Stargazing What Can You Capture in the Night Sky with Jupiter, Saturn, and Comet Photos?

Apr 30, 2006 · Replies 2 · May 3, 2006

Replies: 2

Views: 2K

Graduate Why is my paper very difficult to be published?

May 3, 2006 · Replies 13 · May 3, 2006

Replies: 13

Views: 3K

Graduate Infinitely small and infinitely large

May 3, 2006 · Replies 1 · May 3, 2006

Replies: 1

Views: 8K

Poll

Undergrad Is a Manned Mission to Mars Beneficial for Scientific Advancement?

May 1, 2006 · Replies 9 · May 3, 2006

Replies: 9

Views: 3K

Graduate What is the current understanding of the origin of the universe?

Apr 24, 2006 · Replies 9 · May 3, 2006

Replies: 9

Views: 3K

Graduate Can We Understand Axis Tilts in Planetary Systems?

Apr 29, 2006 · Replies 6 · May 3, 2006

Replies: 6

Views: 3K

Graduate What Caused the Early Universe to Reach 1000 Trillion Degrees Celsius?

Apr 15, 2006 · Replies 20 · May 2, 2006

Replies: 20

Views: 5K

Graduate Mars Mission: Challenges of Sending Humans to Mars

Apr 29, 2006 · Replies 12 · May 2, 2006

Replies: 12

Views: 4K

Graduate Radio Waves emitted by Black Holes

May 2, 2006 · Replies 2 · May 2, 2006

Replies: 2

Views: 8K

Graduate Alternative theories about the origin of the universe

Apr 10, 2006 · Replies 25 · May 2, 2006

Replies: 25

Views: 12K

Undergrad Gravitational slingshotting

Apr 28, 2006 · Replies 14 · May 2, 2006

Replies: 14

Views: 5K

High School Regular Flights to and from Moon: Would You See It?

Apr 7, 2006 · Replies 7 · May 2, 2006

Replies: 7

Views: 3K

Graduate Is the Hubble Constant Constant?

Apr 28, 2006 · Replies 6 · May 2, 2006

Replies: 6

Views: 3K

Graduate Do solar neutrinos really change flavor?

Apr 29, 2006 · Replies 14 · May 1, 2006

Replies: 14

Views: 4K

Graduate Some questions regarding WIMPs as a DM candidate

Apr 20, 2006 · Replies 57 · May 1, 2006

2

Replies: 57

Views: 8K

Graduate Acceleration due to the solar wind

May 1, 2006 · Replies 1 · May 1, 2006

Replies: 1

Views: 4K

Graduate How Does Simultaneity Affect Our Understanding of the Universe's Age?

Apr 30, 2006 · Replies 2 · May 1, 2006

Replies: 2

Views: 2K

Undergrad The Same Plane: Orbits & Galaxies in Our Solar System

Apr 30, 2006 · Replies 1 · May 1, 2006

Replies: 1

Views: 3K

Graduate Repulsive Gravity & Its Impact on Space Geometry

Apr 30, 2006 · Replies 2 · Apr 30, 2006

Replies: 2

Views: 3K

Stargazing Getting Started with Astrophotography: A Beginner's Guide

Apr 12, 2006 · Replies 6 · Apr 30, 2006

Replies: 6

Views: 2K

Graduate Is a Methane-Molecule-Like Solar System Stable?

Apr 25, 2006 · Replies 5 · Apr 30, 2006

Replies: 5

Views: 4K

Strike deathray from list of concerns?

Apr 26, 2006 · Replies 4 · Apr 29, 2006

Replies: 4

Views: 2K

Undergrad Why does a star's gravitational force increase when it becomes a black hole?

Apr 25, 2006 · Replies 10 · Apr 28, 2006

Replies: 10

Views: 3K

Undergrad Relation Between Areas of Astronomy

Apr 27, 2006 · Replies 18 · Apr 28, 2006

Replies: 18

Views: 6K

Graduate Accelerating expansion and the Cosmological Constant

Apr 27, 2006 · Replies 13 · Apr 28, 2006

Replies: 13

Views: 4K

Graduate Congratulations to Christine on the new paper

Apr 26, 2006 · Replies 13 · Apr 28, 2006

Replies: 13

Views: 3K

Graduate Orbital Simulation: Estimating Mass from Orbit & Visual Observations

Apr 26, 2006 · Replies 11 · Apr 27, 2006

Replies: 11

Views: 4K

Undergrad Are we going in a particular direction?

Apr 26, 2006 · Replies 2 · Apr 27, 2006

Replies: 2

Views: 13K

Undergrad Drake equeation and planet finding

Apr 13, 2006 · Replies 23 · Apr 27, 2006

Replies: 23

Views: 4K

Undergrad Is the amount of matter in the universe infinite?

Apr 25, 2006 · Replies 2 · Apr 26, 2006

Replies: 2

Views: 9K

Graduate Can the gas model theory explain recent satellite observations?

Apr 25, 2006 · Replies 10 · Apr 26, 2006

Replies: 10

Views: 3K

Undergrad Someone want to have fun with asteroid simulation?

Mar 31, 2006 · Replies 5 · Apr 26, 2006

Replies: 5

Views: 4K

Graduate Driving past your opponent in a space race

Apr 21, 2006 · Replies 9 · Apr 26, 2006

Replies: 9

Views: 3K

Graduate Time after big bang we can observe, uncertainty principle

Apr 20, 2006 · Replies 6 · Apr 26, 2006

Replies: 6

Views: 5K

Graduate Inverted Physics: Vacuum is Solid, Matter are Holes

Apr 25, 2006 · Replies 7 · Apr 26, 2006

Replies: 7

Views: 3K

High School Discover the Fascinating Phenomenon of Northern Lights

Apr 19, 2006 · Replies 21 · Apr 25, 2006

Replies: 21

Views: 5K

Undergrad Is Our Sun Part of a Binary Star System?

Apr 25, 2006 · Replies 2 · Apr 25, 2006

Replies: 2

Views: 3K

High School Our universe should be called multiverse and not universe

Mar 30, 2006 · Replies 25 · Apr 25, 2006

Replies: 25

Views: 8K

Graduate Can the Cyclic Universe Theory Be Explained Without Superstring Theory?

Apr 24, 2006 · Replies 1 · Apr 25, 2006

Replies: 1

Views: 3K

High School Why does the universe look black?

Sep 13, 2005 · Replies 11 · Apr 25, 2006

Replies: 11

Views: 5K

Graduate How Do Aliens and Astronomers Measure Time Differently in the Galaxy Paradox?

Apr 18, 2006 · Replies 2 · Apr 25, 2006

Replies: 2

Views: 3K

Graduate Knowing the environment and the creation of the universe

Apr 21, 2006 · Replies 6 · Apr 24, 2006

Replies: 6

Views: 3K

Undergrad Proving Pluto's Orbit Inside Neptune's - Maths Investigation

Apr 23, 2006 · Replies 1 · Apr 23, 2006

Replies: 1

Views: 4K

Graduate Could a Wormhole and Black Holes be Used to Reverse the Big Bang?

Mar 30, 2006 · Replies 5 · Apr 23, 2006

Replies: 5

Views: 3K

Graduate Is the Universe a 3D Surface of a 4D Hypersphere?

Apr 17, 2006 · Replies 14 · Apr 22, 2006

Replies: 14

Views: 5K

Graduate Neutrinos, can you explain them to me?

Apr 21, 2006 · Replies 1 · Apr 21, 2006

Replies: 1

Views: 3K

Graduate Occam's Razor and WMAP Anomalies

Apr 20, 2006 · Replies 6 · Apr 21, 2006

Replies: 6

Views: 3K

Graduate How Do Scientists Measure the Universe's Expansion Rate?

Apr 7, 2006 · Replies 21 · Apr 20, 2006

Replies: 21

Views: 6K

Graduate Calculating apparent positions of sun and moon

Apr 1, 2006 · Replies 6 · Apr 18, 2006

Replies: 6

Views: 5K

What planets were ancient people able to see in the sky without telescopes?

Apr 12, 2006 · Replies 7 · Apr 18, 2006

Replies: 7

Views: 3K

Undergrad What distinguishes Pre-main-sequence stars from main sequence stars?

Apr 13, 2006 · Replies 5 · Apr 16, 2006

Replies: 5

Views: 3K

Undergrad Matter vs Anti-Matter: Why Did Matter Dominate Universe?

Mar 31, 2006 · Replies 21 · Apr 15, 2006

Replies: 21

Views: 5K

High School Sun's Position in Our Solar System

Apr 15, 2006 · Replies 9 · Apr 15, 2006

Replies: 9

Views: 12K

Graduate Do Celestial Objects Compete for Matter?

Feb 14, 2006 · Replies 4 · Apr 15, 2006

Replies: 4

Views: 3K

Undergrad Distance between earth and moon increasing

Apr 12, 2006 · Replies 4 · Apr 15, 2006

Replies: 4

Views: 16K

UK Moon Sighting: Was the Halo Real or Atmospheric?

Apr 14, 2006 · Replies 5 · Apr 14, 2006

Replies: 5

Views: 3K

Stargazing Do astronomers at the 3,000 dollar level become degenerates

Apr 12, 2006 · Replies 1 · Apr 13, 2006

Replies: 1

Views: 1K

High School What Is the Center in Sloan Digital Sky Survey?

Apr 8, 2006 · Replies 5 · Apr 13, 2006

Replies: 5

Views: 3K

Undergrad Temp of a Comm Satellite in Orbit Around Earth

Apr 12, 2006 · Replies 2 · Apr 12, 2006

Replies: 2

Views: 3K

Undergrad Why do stars exhibit red shift and blue shift in our universe?

Apr 5, 2006 · Replies 9 · Apr 11, 2006

Replies: 9

Views: 2K

Graduate Tried to understand how we/ our universe came to be

Apr 8, 2006 · Replies 6 · Apr 11, 2006

Replies: 6

Views: 3K

Graduate Quasar Anomalies: Lack of Time Dilation in Variability

Mar 11, 2006 · Replies 78 · Apr 11, 2006

3

Replies: 78

Views: 15K

High School Sun's Companion Star: Nemesis Theory

Apr 7, 2006 · Replies 3 · Apr 10, 2006

Replies: 3

Views: 7K

Graduate What is the logical setup that determines the epoch of the CMB?

Mar 29, 2006 · Replies 9 · Apr 7, 2006

Replies: 9

Views: 3K

Graduate What Are Rosswog's Ideas on the GRB Mechanism?

Apr 2, 2006 · Replies 9 · Apr 7, 2006

Replies: 9

Views: 3K

Graduate Could all supermassive objects in the center of galaxies be SGR's post mortem?

Apr 5, 2006 · Replies 1 · Apr 6, 2006

Replies: 1

Views: 3K

Undergrad How to Calculate a Parsec - Tips from Astronomers

Apr 5, 2006 · Replies 2 · Apr 6, 2006

Replies: 2

Views: 2K

Graduate Why Does a(tau) Not Equal af in This Orbital Migration Equation?

Apr 4, 2006 · Replies 1 · Apr 5, 2006

Replies: 1

Views: 3K

Graduate How Does Quantum Mechanics Explain the Beginning of the Universe?

Mar 31, 2006 · Replies 3 · Apr 5, 2006

Replies: 3

Views: 4K

Graduate The Great Attractor - What Do We Know?

Mar 21, 2006 · Replies 16 · Apr 4, 2006

Replies: 16

Views: 5K

Graduate "Mysterious "Chaos Cloud" Headed Toward Earth"

Apr 1, 2006 · Replies 3 · Apr 3, 2006

Replies: 3

Views: 12K

Undergrad Evolving Earth: Solar System Environment Over Time

Apr 2, 2006 · Replies 1 · Apr 3, 2006

Replies: 1

Views: 3K

High School How many places in the solar system have liquid water?

Mar 16, 2006 · Replies 7 · Apr 3, 2006

Replies: 7

Views: 5K

Undergrad Are White Holes Real or Just a Theoretical Concept?

Feb 2, 2006 · Replies 5 · Apr 3, 2006

Replies: 5

Views: 3K

Graduate The cycle of life? Fractal orbits and spin.

Apr 2, 2006 · Replies 2 · Apr 2, 2006

Replies: 2

Views: 3K

Graduate Is There a Preferred Lorentz Frame in the CMB?

Mar 30, 2006 · Replies 5 · Apr 2, 2006

Replies: 5

Views: 4K

Graduate Debate with my coworker regarding the inflationary theory

Jan 2, 2006 · Replies 5 · Apr 1, 2006

Replies: 5

Views: 3K

Graduate Dark Energy's effect on the curvature of space time

Mar 16, 2006 · Replies 10 · Mar 31, 2006

Replies: 10

Views: 7K

Undergrad Neutron star: heaviest teaspoon of matter

Mar 23, 2006 · Replies 5 · Mar 30, 2006

Replies: 5

Views: 29K

Graduate Understanding Strong & Weak Resonance

Mar 24, 2006 · Replies 4 · Mar 30, 2006

Replies: 4

Views: 4K

Graduate Does Gravity Violate the Cosmo Speed Limit?

Mar 30, 2006 · Replies 20 · Mar 30, 2006

Replies: 20

Views: 4K

Graduate Will the universe end in a Big Crunch or a Big Rip?

Mar 30, 2006 · Replies 1 · Mar 30, 2006

Replies: 1

Views: 6K

Graduate How Does Black Hole Entropy Increase When Starting with a Pure State?

Mar 11, 2006 · Replies 6 · Mar 30, 2006

Replies: 6

Views: 3K

Undergrad Interest in blackholes and whiteholes

Mar 29, 2006 · Replies 4 · Mar 30, 2006

Replies: 4

Views: 2K

Graduate Is the Holographic Universe Theory Still a Valid Concept?

Mar 6, 2006 · Replies 11 · Mar 29, 2006

Replies: 11

Views: 5K

Stargazing Finding Equations for Sun's Eclipse Periodicity

Mar 29, 2006 · Replies 1 · Mar 29, 2006

Replies: 1

Views: 3K

Graduate What are the key challenges facing mainstream cosmological theories?

Mar 25, 2006 · Replies 33 · Mar 29, 2006

2

Replies: 33

Views: 6K

Graduate Measuring Mass of the Cosmos: Charles Hellaby's New Paper

Mar 26, 2006 · Replies 8 · Mar 29, 2006

Replies: 8

Views: 3K

Graduate An HST Program for the Luminosity Calibration of Type Ia Supernovae

Mar 27, 2006 · Replies 4 · Mar 29, 2006

Replies: 4

Views: 4K

Undergrad Question about relation between galaxies

Mar 26, 2006 · Replies 3 · Mar 28, 2006

Replies: 3

Views: 3K

High School How close is 18 Scorpii, the other solar twin?

Mar 28, 2006 · Replies 1 · Mar 28, 2006

Replies: 1

Views: 2K

Graduate Astronomy Problems: Help Solve Now!

Mar 28, 2006 · Replies 1 · Mar 28, 2006

Replies: 1

Views: 3K

Fell into the black hole that is myspace

Mar 26, 2006 · Replies 19 · Mar 27, 2006

Replies: 19

Views: 3K

Graduate New Satellite Data On Universe's First Trillionth Second

Mar 21, 2006 · Replies 2 · Mar 26, 2006

Replies: 2

Views: 3K

Graduate Inflation is the rapid acceration of space some time after the BB

Mar 26, 2006 · Replies 1 · Mar 26, 2006

Replies: 1

Views: 3K

Astronomy

Astronomy is the scientific study of celestial objects and phenomena beyond Earth's atmosphere. It encompasses the observation and analysis of stars, planets, galaxies, and other celestial bodies, as well as the broader exploration of the universe's origins, structure, and evolution.

Astronomers employ a variety of tools, including telescopes, satellites, and advanced instrumentation, to gather data and uncover the mysteries of the cosmos. The field addresses questions about the nature of dark matter, the expansion of the universe, and the potential for extraterrestrial life.

Astronomy not only contributes to our understanding of the cosmos but also inspires wonder and curiosity about the vastness and complexity of the universe we inhabit.

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